jzmall_wx/lib/vant-weapp/picker-column/index.wxml

<wxs src="./index.wxs" module="getOptionText" />

<view
  class="van-picker-column custom-class"
  style="height: {{ itemHeight * visibleItemCount }}px"
  bind:touchstart="onTouchStart"
  catch:touchmove="onTouchMove"
  bind:touchend="onTouchEnd"
  bind:touchcancel="onTouchEnd"
>
  <view style="transition: transform {{ duration }}ms; line-height: {{ itemHeight }}px; transform: translate3d(0, {{ offset + (itemHeight * (visibleItemCount - 1)) / 2 }}px, 0)">
    <view
      wx:for="{{ options }}"
      wx:for-item="option"
      wx:key="index"
      data-index="{{ index }}"
      style="height: {{ itemHeight }}px"
      class="van-ellipsis van-picker-column__item {{ option && option.disabled ? 'van-picker-column__item--disabled' : '' }} {{ index === currentIndex ? 'van-picker-column__item--selected active-class' : '' }}"
      bindtap="onClickItem"
    >{{ getOptionText(option, valueKey) }}</view>
  </view>
</view>